An emergency communications network is designed to provide reliable communications during an emergency. The term may refer to a military network, such as: Ground Wave Emergency Network Minimum Essential Emergency Communications Network Emergency communication networks may also be used for notifying the public of emergencies requiring action. NOAA Weather Radio Emergency Alert System Emergency Public Warning System National Severe Weather Warning Service It also may refer to a network established by civil authorities, with or without volunteer help: Emergency communications center Amateur radio emergency communications Emergency communication system Frequently, a previously established Emergency communications center provides dispatching of Emergency services and Emergency operations center capabilities during a severe disaster. In the United States, dialing 911 is the most frequent method of contacting the dispatch personnel. Emergency management